Is it possible to measure Internet pipe to find bottleneck?

[Steven Friedrich]

I have TWC Internet (formerly InsightBB).  I can measure my Internet pipe
using a couple sites on the Internet, but that's a composite rating, meaning
it doesn't differentiate between the parts of the pipeline.

 

I would like to know which piece of my pipeline is the limiting factor.  Is
my pipe from my Internet provider ever saturated, or is my cable modem or
router limiting my overall speed?

 

Any tools out there that are freely available or low-cost that will clarify
this?

 

I am currently running Windows 7 on my laptop, though I have been using
FreeBSD since 1.0.1.5 (or something near there).

 

I will soon have another drive and be running FreeBSD 10.



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